Pressure regulator block



FIG. 1 is a perspective view of a pressure regulator block according toan embodiment of the invention;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line portion of the figures is included to show unclaimedsubject matter only and forms no part of the claimed design.

CLAIM The ornamental design for a pressure regulator block, as shown anddescribed.